[gnome-builder] autogen: Fix for non-srcdir builds

[Florian Müllner <fmuellner src gnome org>]

commit 77c3e30bb1641722835f898220529877eee231e6
Author: Florian Müllner <fmuellner gnome org>
Date:   Wed Jun 1 21:01:31 2016 +0200

    autogen: Fix for non-srcdir builds

 autogen.sh |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)
---
diff --git a/autogen.sh b/autogen.sh
index 8f0d698..3189b7b 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -10,6 +10,9 @@ test -z "$srcdir" && srcdir=.
     exit 1
 }
 
+olddir=`pwd`
+
+cd $srcdir
 
 touch ChangeLog
 touch INSTALL
@@ -28,6 +31,8 @@ fi
 
 autoreconf --force --install -Wno-portability || exit 1
 
+cd $olddir
+
 if [ "$NOCONFIGURE" = "" ]; then
         $srcdir/configure "$@" || exit 1